Very pleased with this product. Looks good, is versatile, and as the various reviews have stated, I also could not detect any colouration to the sound.
This unit was reviewed in Sound On Sound, so worth a read. What that review omitted to mention, which is why I only gave 4 stars for features, is that the mono SUB output can only be active when added to one of the other 3 outputs. So if you have a full-range 'grot-box' mono speaker, you can't solo it from that SUB output. That fact reduces the available outputs from 4 to 3 (under some scenarios). Missed opportunity I think. What you need to do is use one of the stereo outputs, configure it as mono, and connect your mono grot-box to the L output of that stereo output pair. A perfectly valid workaround but not what I was expecting!
5-stars is deserved really, as it does include Polarity and Cut combination so you can listen to the difference signal. Hugh Robjohns loves that, maybe I will too!
Great piece of gear from a fab manufacturer at an amazing price.